<?php

class App_Cms_Form_SubForm_Meta extends Qs_Form_SubForm
{
    protected $_mode;
    protected $_language;
    protected $_optionsElements = array();
    protected $_hiddenFields;
    protected $_metaOptions = array();
    protected $_isRedirectFields = false;
    protected $_redirectStatuses = array(
        300 => '300 Multiple Choices',
        301 => '301 Moved Permanently',
        302 => '302 Moved temporarily',
        303 => '303 See Other',
        304 => '304 Not Modified',
        307 => '307 Temporary Redirect'
    );
    protected $_currentPageId = null;
    /** @var App_Cms_Obj */
    protected $_dataObj;
    protected $_hasButtons = false;
    protected $_pageHeaderInherited = true;

    public function init()
    {
        $this->addElementPrefixPath('App_Cms_Validate', 'App/Cms/Validate', 'validate');
        $this->_initDataObj();
        return parent::init();
    }

    protected function _initDataObj()
    {
        $this->_dataObj = new App_Cms_Obj();
        $idPage = $this->_getData('id');
        if ($idPage) {
            $this->_dataObj->setPrimaryKey($idPage);
        }
        return $this;
    }

    public function getMode()
    {
        if (null == $this->_mode) {
            $this->_mode = 'edit';
        }
        return $this->_mode;
    }

    public function setMode($mode)
    {
        $this->_mode = $mode;
    }

    public function setLanguage($language)
    {
        $this->_language = $language;
        return $this;
    }

    public function setMetaOptions($options)
    {
        $this->_metaOptions = $options;
    }

    public function setIsRedirectFields($value)
    {
        $this->_isRedirectFields = (bool) $value;
    }

    public function getIsRedirectFields()
    {
        if (App_Admin_Auth::getInstance()->getSuMode()) {
            return ($this->_isRedirectFields && isset($this->_metaOptions['redirect']));
        }
        return ($this->_isRedirectFields && isset($this->_metaOptions['redirect']) && 'y' == $this->_metaOptions['redirect']['show']);
    }

    public function getLanguage()
    {
        return $this->_language;
    }

    public function isDefaultLanguage()
    {
        return $this->_language === Qs_Constant::get('DEFAULT_LANGUAGE');
    }

    protected function _getParentId()
    {
        if (Qs_Request::isXmlHttpRequest()) {
            if (App_Admin_Auth::getInstance()->getSuMode()) {
                $parentId = $this->_getData('idParent');
            } else {
                $parentId = $this->_dataObj->getData('meta[idParent]');
            }
        } else {
            $parentId = $this->_getData('meta[idParent]');
        }

        return $parentId;
    }

    protected function _initElements()
    {
        $this->addElement('hidden', 'id');

        $this->_initInformationElements();
        $this->_initMetaElements();
        $this->_initVisibilityElements();

        $this->_addMetaButtons();

        return $this;
    }

    /**
     * @param string $label
     * @param null|string $description
     * @return string
     */
    protected function _renderElementLabel($label, $description = null)
    {
        $label = htmlspecialchars($label);
        if ($description) {
            $label .= '<span class="label_description">' . htmlspecialchars($description) . '</span>';
        }
        return $label;
    }

    /**
     * @param string $type
     * @param string $name
     * @param array|null $options
     * @return App_Cms_Form_SubForm_Meta
     */
    protected function _addElementExtended($type, $name, array $options = null)
    {
        $escapeLabel = true;
        if (!empty($options['label']) && !empty($options) && !empty($options['labelDescription'])) {
            $options['label'] = $this->_renderElementLabel($options['label'], $options['labelDescription']);
            unset($options['labelDescription']);
            $escapeLabel = false;
        }

        $this->addElement($type, $name, $options);

        if (!$escapeLabel) {
            $this->getElement($name)->getDecorator('Label')->setOption('escape', false);
        }

        return $this;
    }

    protected function _initInformationElements()
    {
        if (!$this->isDefaultLanguage()) {
            return $this;
        }

        $this->addElement('header', 'informationHeader', array('value' => 'Information About This Page'));

        if (App_Admin_Auth::getInstance()->getSuMode()) {
            $this->addElement(
                'select',
                'idParent',
                array(
                    'label'        => 'Parent Page',
                    'escapeLabel'  => false,
                    'multioptions' => array(0 => 'Root') + (array) $this->_dataObj->getParent4Select()
                )
            );
            $informationElements[] = 'idParent';
        } else {
            $this->addElement('hidden', 'idParent');
        }

        $this->_addElementExtended(
            'text',
            'menuTitle',
            array(
                'label'       => 'Menu Title',
                'required'    => true,
                'labelDescription' => 'What you enter here will show in the main navigation (menu) of the website.'
            )
        );

        $this->_addElementExtended('text', 'header', [
            'label'            => 'Page Header',
            'labelDescription' => 'What you enter here will show in the header area (top) of the webpage.'
                                . ($this->isPageHeaderInherited() ? ' If you leave this field empty - the Page Header will be the same as Menu Title.' : '')
        ]);

        $idParent = $this->_getParentId();
        $this->_addElementExtended(
            'pageAlias',
            'alias',
            array(
                'label'                 => 'Alias',
                'required'              => true,
                'maxlength'             => 200,
                'sourceField'           => 'meta-menuTitle',
                'labelDescription'      => 'What you enter here will show in the actual page URL; no spaces are allowed',
                'aliasValidatorOptions' => array(
                    'table'     => new Qs_Db_Table('Page'),
                    'column'    => 'alias',
                    'currentId' => $this->_getData('id'),
                    'options'   => array('where' => array('idParent' => (int) $idParent))
                )
            )
        );
        $parentAlias = Qs_SiteMap::findFirst(array('id' => $idParent), null, null, 'fullAlias');
        $this->getElement('alias')->addValidator('XmlAliasUnique', true, array('parentAlias' => $parentAlias));

        if (App_Admin_Auth::getInstance()->getSuMode()) {
            $this->addElement('select', 'handler', array('label' => 'Handler', 'required' => true));
            $this->addElement('select', 'bodyTemplate', array('label' => 'Body Template'));
        } else {
            $this->addElement('hidden', 'handler');
            $this->addElement('hidden', 'bodyTemplate');
        }

        return $this;
    }

    protected function _initMetaElements()
    {
        $this->addElement('header', 'metaHeader', array('value' => 'Meta Tags'));
        $description = 'This information is used to describe the webpage\'s content. '
                     . 'Most search engines use this data when adding pages to their search index.';
        $this->addElement('static', 'metaStatic', array('value' => $description, 'tag' => 'p', 'class' => 'description'));
        /** @var Qs_Form_Decorator_Label $label */
        $label = $this->getElement('metaStatic')->getDecorator('Label');
        $label->setTagOptions(array('class' => 'hidden'));

        $this->_addElementExtended(
            'text',
            'title',
            array(
                'label'            => 'Title',
                'labelDescription' => 'This information will show in the browser tab and in search results. '
                                    . 'If you leave this field empty - the Title will be the same as Menu Title.'
            )
        );

        $this->_addElementExtended(
            'textarea',
            'keywords',
            array(
                'label'            => 'Keywords',
                'labelDescription' => 'This information will not show on the site at all; '
                                    . 'it is stored in the site\'s code "behind the scenes".'
            )
        );

        $this->_addElementExtended(
            'textarea',
            'description',
            array(
                'label'            => 'Description',
                'labelDescription' => 'This information will not show on the site at all but it will show in search '
                                    . 'results, below the Title tag.'
            )
        );

        return $this;
    }

    protected function _initVisibilityElements()
    {
        $isSu = App_Admin_Auth::getInstance()->getSuMode();
        $hasOptions = in_array('y', Qs_Array::fetchCol($this->_metaOptions, 'show'));
        $isRedirectFields = $this->getIsRedirectFields();

        if ($isSu || $hasOptions || $isRedirectFields) {
            $this->addElement('header', 'visibilityHeader', array('value' => 'Visibility Options'));
        }

        $this->_addOptionsGroup();

        if ($isRedirectFields) {
            $this->addElement(
                'select',
                'redirectType',
                array(
                    'label'        => 'Redirect Type',
                    'multiOptions' => array('' => '- Select Type -', 'page' => 'Site Page', 'url' => 'Url')
                )

            );
            $this->_currentPageId = intval(Qs_Request::getRequestValue('id'));
            $this->addElement(
                'select',
                'redirectPageId',
                array(
                    'label'        => 'Site Page',
                    'multiOptions' => array('0' => '- Select Page -'),
                    'escapeLabel'  => false,
                )
            );
            $this->addElement(
                'text',
                'redirectAlias',
                array(
                    'label'        => 'Redirect page to:',
                    'description'  => 'Example: http://www.adaptainc.com',
                )
            );
            $this->addElement(
                'select',
                'redirectStatus',
                array(
                    'label'        => 'Redirect Status',
                    'required'     => true,
                    'value'        => 301,
                    'multiOptions' => $this->_redirectStatuses,
                )
            );

            $this->getElement('redirectType')->getDecorator('label')->setOption('class', 'required');
            $this->getElement('redirectPageId')->getDecorator('label')->setOption('class', 'required');
            $this->getElement('redirectAlias')->addValidator('StringLength', false, array('max' => 255));
            $this->getElement('redirectAlias')->getDecorator('label')->setOption('class', 'required');

            if ($isSu) {
                $this->addElement(
                    'textarea',
                    'customOptions',
                    array(
                        'label' => 'Custom Options',
                        'description' => 'Note: Allowed json only. Example: {"glossary": {"title": "example glossary"}}'
                    )
                );
            }

            $this->addFormRule(array($this, 'validateForm'));
        }

        return $this;
    }

    protected function _addMetaButtons()
    {
        $decorators = array('ViewHelper', 'HtmlTag');

        $this->addElement('button', 'save', array('label' => 'Save', 'decorators' => $decorators, 'class' => 'btn btn-primary'));
        $this->addElement('button', 'cancel', array('label' => 'Cancel', 'decorators' => $decorators, 'class' => 'btn'));
        $this->addElement('button', 'edit', array('label' => 'Edit', 'decorators' => $decorators, 'class' => 'btn'));

        $this->addDisplayGroup(
            array('save', 'cancel', 'edit'),
            'meta_toolbar',
            array(
                'decorators' => array(
                    'FormElements',
                    array(
                        'decorator' => 'HtmlTag',
                        'options' => array('tag' => 'dd', 'class' => 'meta_toolbar')
                    )
                )
            )
        );

        return $this;
    }

    protected function _addOptionsGroup()
    {
        $isSu = App_Admin_Auth::getInstance()->getSuMode();
        $hasOptions = in_array('y', Qs_Array::fetchCol($this->_metaOptions, 'show'));
        $groupOptions = [
            'decorators' => [
                ['FormElements'], ['DtDdWrapper', ['ddAttribs' => ['class' => 'option-group-wrap']]]
            ],
        ];

        if ($isSu) {
            $this->addElement('static', 'optionGroupHeader', ['value' => '┌ Visible']);
            $this->getElement('optionGroupHeader')->getDecorator('label')->setTagOption('class', 'hidden');
            foreach($this->_metaOptions as $name => $options) {
                $this->_addOptionCheckbox($name . '4Dummy', $options, true);
                $this->_addOptionCheckbox($name, $options);
                $this->addDisplayGroup([$name . '4Dummy', $name], 'optionGroup' . ucfirst($name), $groupOptions);
            }
        } else if ($hasOptions) {
            foreach ($this->_metaOptions as $name => $options) {
                if ('y' == $options['show']) {
                    $this->_addOptionCheckbox($name, $options);
                    $this->addDisplayGroup([$name], 'optionGroup' . ucfirst($name), $groupOptions);
                }
            }
        }

        return $this;
    }

    protected function _addOptionCheckbox($name, $options, $suMode = false)
    {
        if ($suMode) {
            $label = '';
        } else {
            $label = $options['title'];
        }

        $elementOptions = array(
            'label'      => $label,
            'class'      => ($suMode) ? 'allow_change' : '',
            'decoration' => 'simple'
        );

        if ($suMode) {
            $elementOptions['title'] = 'Allow change "' . $options['title'] . '"';
        }

        if (!App_Admin_Auth::getInstance()->getSuMode() && Qs_Array::get($options, 'disabled')) {
            $elementOptions['disabled'] = 'disabled'; // так додає клас disabled до чекбокса
            $elementOptions['disable'] = true; // дісейблить і не малює хідден
            $elementOptions['uncheckedValue'] = null;
        }

        $this->addElement('checkbox', $name, $elementOptions);
        if ($suMode) {
            $this->{$name}->getDecorator('Label')->setOption('class', 'allow_change_label');
        }

        if ($suMode && 'y' == $options['show']) {
            $this->{$name}->checked = 'checked';
        }

        $this->{$name}->removeDecorator('DtDdWrapper');
        $this->{$name}->addDecorator('HtmlTag', [
            'tag'   => 'div',
            'id'    => $this->getName() . '-element',
            'class' => $suMode ? 'option-visible-wrap' : 'option-wrap',
        ]);

        $this->_optionsElements[] = $name;

        return $this;
    }

    public function validateForm($data)
    {
        $errors = array();

        if ($this->getIsRedirectFields()) {
            if (isset($data['redirect']) && 'y' == $data['redirect']) {
                if (!isset($data['redirectType']) || empty($data['redirectType'])) {
                    $errors['redirectType'] = 'This is a required field';
                } else {
                    if ('page' == $data['redirectType']) {
                        if (empty($data['redirectPageId'])) {
                            $errors['redirectPageId'] = 'This is a required field';
                        } elseif (isset($this->_currentPageId) && $this->_currentPageId == $data['redirectPageId']) {
                            $errors['redirectPageId'] = 'Please choose another page to prevent recursive redirects';
                        } else {
                            $validator = new Zend_Validate_Int();
                            if (!$validator->isValid($data['redirectPageId'])) {
                                $errors['redirectPageId'] = '"Site Page" is in wrong format';
                            }
                            $page = Qs_SiteMap::findFirst(array('id' => intval($data['redirectPageId'])));
                            if (!empty($page) && $page['redirect'] == 'y') {
                                $errors['redirectPageId'] = 'Please choose another page. Page "' . $page['title']
                                                          . '" has redirect';
                            }
                        }
                    } else {
                        if (empty($data['redirectAlias'])) {
                            $errors['redirectAlias'] = 'This is a required field';
                        } else {
                            $url = str_replace('{BASE_URL}', BASE_URL_LANGUAGE, $data['redirectAlias']);
                            $validator = new Qs_Validate_Url();
                            if (!$validator->isValid($url)) {
                                $errors['redirectAlias'] = '"Redirect page to" is in wrong format';
                            }
                        }
                    }
                }
            }
        }

        if (!empty($data['customOptions'])) {
            if (null === json_decode($data['customOptions'])) {
                $errors['customOptions'] = 'Field must contain only json';
            }
        }

        return (empty($errors)) ? true : $errors;
    }

    public function beforeRender()
    {
        $mode = $this->getMode();
        switch ($mode) {
            case 'view':
                $this->getDecorator('HtmlTag')->setOption('class', 'meta view_mode');
                break;
            default:
                break;
        }
    }

    public function render(Zend_View_Interface $view = null)
    {
        $this->beforeRender();
        return parent::render($view);
    }

    public function loadDefaultDecorators()
    {
        if ($this->loadDefaultDecoratorsIsDisabled()) {
            return $this;
        }

        $decorators = $this->getDecorators();
        if (empty($decorators)) {
            $this->addDecorator('FormElements')
                 ->addDecorator('HtmlTag', array('tag' => 'dl'))
                 ->addDecorator('Fieldset')
                 ->addDecorator('DtDdWrapper');
        }

        return $this;
    }

    public function addElement($element, $name = null, $options = null)
    {
        if (in_array($name, $this->getHiddenFields())) {
            return $this;
        }
        parent::addElement($element, $name, $options);
        return $this;
    }

    public function getHiddenFields()
    {
        if (null === $this->_hiddenFields) {
            /** @var $hiddenFields Zend_Config */
            if (null === ($hiddenFields = Qs_Config::getByInstance($this)->get('hiddenFields'))) {
                $this->_hiddenFields = array();
            } else {
                $this->_hiddenFields = $hiddenFields->toArray();
            }
        }
        return $this->_hiddenFields;
    }

    public function isPageHeaderInherited()
    {
        return $this->_pageHeaderInherited;
    }

    public function setPageHeaderInherited($pageHeaderInherited)
    {
        $this->_pageHeaderInherited = $pageHeaderInherited;
        return $this;
    }
}